stages/user_delete: add user delete stage, remove view from core

passbook/flows/migrations/0005_auto_20200512_1158.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.0.5 on 2020-05-12 11:58
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('passbook_flows', '0004_auto_20200510_2310'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='flow',
+            name='designation',
+            field=models.CharField(choices=[('authentication', 'Authentication'), ('invalidation', 'Invalidation'), ('enrollment', 'Enrollment'), ('unenrollment', 'Unrenollment'), ('recovery', 'Recovery'), ('password_change', 'Password Change')], max_length=100),
+        ),
+    ]